Abstract : This memorandum presents a set of three tables for the rapid conversion of real numbers from the floating point octal representation used internally by digital computers to the decimal representation employed by human beings. In addition to the standard octal-to-decimal conversion, octal fractions are further converted to decimal hours and hours and minutes. Thus, while the memorandum should prove useful to anyone who works closely with digital computers and is required to make such conversions, it should be especially valuable to simulation programmers. (Author)